How long is the Otira Tunnel?

The Otira Tunnel is 8.5 kilometers long and features a steep grade.

What was significant about the Otira Tunnel's construction?

Construction took 15 years and was interrupted by World War I, opening in 1923 as the longest tunnel in the British Empire at that time.

Otira Tunnel Travel Vlogs, Authentic Tips & FAQs

Otira Tunnel, a marvel of engineering, stretches over 8.5 kilometers through the Southern Alps, connecting the remote village of Otira with Arthur's Pass. Opened in 1923, it was once the longest tunnel in the British Empire. Travelers often recount the eerie yet exciting experience of passing through this dark, historical passage. Vloggers on WanderVlogs frequently capture the moment the train emerges from the tunnel, revealing the dramatic landscapes of the West Coast. The tunnel stands as a testament to human ingenuity, making it a noteworthy stop for those exploring New Zealand's rail routes.

Last updated: Dec 18, 2025